Ship&#39;s ventilator.



m. 699,928. Patented May l3, I902. c. mvenva J. F. FORD.

SHIPS VENTILATORQ (Application filed July-10, 1901.) (No Model.)

UNITED STATES PATENT OFFICE.

CHARLES MOVEETY AND JOHN F. FORD, OF. PHILADELPHIA, PENNSYLVANIA.

SHlPS VVENTILATOR.

SPECIFICATION forming part of Letters Patent No. 699,928, dated May 13, 1902.

I Application filed July 10, 1901. Serial No. 67.714- (No model.)

T0 at whom it may concern:

Be it known that we, CHARLES MCVEETY and JOHN F. FORD, citizens of the United States, residing at Philadelphia, in the county of Philadelphia and State of Pennsylvania, have invented certain new and useful Improvements in Ships Ventilators, of which the following is a specification.

Referring to the accompanying drawings, forming part of this specification, Figure 1 illustrates a side elevation of a ventilator constructed in accordance with our invention. Fig. 2 represents a front elevation of the same. Fig. 3 shows a horizontal section on the line 3 3 of Fig. 2; and Fig. 4 represents a detached of varying width and provided at the sides with upturned portions a, forming grooves for the reception of the ribs B, which are in' ber of plates, as A, may be employed without departing from the scope of our invention.

As shown in Fig. 4, the plates A at the base and mouth of the ventilator are covered with headings C and D, having slots 0 and d to receive the plates A and openings e and f to receive the ribs B. The beadings O and D are firmly secured by brazing metal to the plates A and ribs B.

Having described our invention, what We claim, and desire to secure by Letters Patent 1s 1. A ventilator comprising in combination with a series of curved plates of graduallyincreasing width having upturned edges forming grooves, a series of split tubes or ribs for engaging the grooves of said plates, and ribs arranged at the base and mouth having grooves engaging the plates and openings to receive the ribs substantially as specified.

2. Aventilator comprisingacurved tapered pipe octagonal in cross-section composed of plates; A, having upturned end forming grooves, ribs B in the form of split tubes for engaging and holding said plates in position, and ribs 0 and D arranged respectively at the base and mouth of the ventilator having slotted openings to receive the plates and gpenings for the ribs, substantially as speci- In testimony whereof we aflix our signatures in presence of two witnesses.

CHARLES MCVEETY. JOHN F. FORD.

Witnesses:

0.;P. S. GARWoon, H. E. COUGHLIN. 

